题目:
In perfectly competitive constant-cost industries and perfectly competitive increasing-cost industries, respectively, what is the most likely long-run effect of a permanent increase in demand ncreasing-cost industry Constant-cost industry()①A. price decreasesprice decreases ②B. price decreasesprice remains unchanged ③C. price remains unchangedprice decreases
A. ①
B. ②
C. ③
答案:
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